curl测试Docker容器连通性
通过curl来测试docker对外访问是否正常，这里测试Docker tomcat容器访问：
[root@mysqlserver ~]# curl http://172.17.0.8:8080 <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Apache Tomcat/8.5.16</title>
<link href="favicon.ico" rel="icon" type="image/x-icon" />
<link href="favicon.ico" rel="shortcut icon" type="image/x-icon" />
<link href="tomcat.css" rel="stylesheet" type="text/css" />
</head> <body>
<div id="wrapper">
<div id="navigation" class="curved container">
<span id="nav-home"><a href="http://tomcat.apache.org/">Home</a></span>
<span id="nav-hosts"><a href="/docs/">Documentation</a></span>
<span id="nav-config"><a href="/docs/config/">Configuration</a></span>
<span id="nav-examples"><a href="/examples/">Examples</a></span>
<span id="nav-wiki"><a href="http://wiki.apache.org/tomcat/FrontPage">Wiki</a></span>
<span id="nav-lists"><a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></span>
<span id="nav-help"><a href="http://tomcat.apache.org/findhelp.html">Find Help</a></span>
<br class="separator" />
</div>
<div id="asf-box">
<h1>Apache Tomcat/8.5.16</h1>
</div>
<div id="upper" class="curved container">
<div id="congrats" class="curved container">
<h2>If you're seeing this, you've successfully installed Tomcat. Congratulations!</h2>
</div>
<div id="notice">
<img src="tomcat.png" alt="[tomcat logo]" />
<div id="tasks">
<h3>Recommended Reading:</h3>
<h4><a href="/docs/security-howto.html">Security Considerations HOW-TO</a></h4>
<h4><a href="/docs/manager-howto.html">Manager Application HOW-TO</a></h4>
<h4><a href="/docs/cluster-howto.html">Clustering/Session Replication HOW-TO</a></h4>
</div>
</div>
<div id="actions">
<div class="button">
<a class="container shadow" href="/manager/status"><span>Server Status</span></a>
</div>
<div class="button">
<a class="container shadow" href="/manager/html"><span>Manager App</span></a>
</div>
<div class="button">
<a class="container shadow" href="/host-manager/html"><span>Host Manager</span></a>
</div>
</div>
<!--
<br class="separator" />
-->
<br class="separator" />
</div>
<div id="middle" class="curved container">
<h3>Developer Quick Start</h3>
<div class="col25">
<div class="container">
<p><a href="/docs/setup.html">Tomcat Setup</a></p>
<p><a href="/docs/appdev/">First Web Application</a></p>
</div>
</div>
<div class="col25">
<div class="container">
<p><a href="/docs/realm-howto.html">Realms & AAA</a></p>
<p><a href="/docs/jndi-datasource-examples-howto.html">JDBC DataSources</a></p>
</div>
</div>
<div class="col25">
<div class="container">
<p><a href="/examples/">Examples</a></p>
</div>
</div>
<div class="col25">
<div class="container">
<p><a href="http://wiki.apache.org/tomcat/Specifications">Servlet Specifications</a></p>
<p><a href="http://wiki.apache.org/tomcat/TomcatVersions">Tomcat Versions</a></p>
</div>
</div>
<br class="separator" />
</div>
<div id="lower">
<div id="low-manage" class="">
<div class="curved container">
<h3>Managing Tomcat</h3>
<p>For security, access to the <a href="/manager/html">manager webapp</a> is restricted.
Users are defined in:</p>
<pre>$CATALINA_HOME/conf/tomcat-users.xml</pre>
<p>In Tomcat 8.5 access to the manager application is split between
different users. <a href="/docs/manager-howto.html">Read more...</a></p>
<br />
<h4><a href="/docs/RELEASE-NOTES.txt">Release Notes</a></h4>
<h4><a href="/docs/changelog.html">Changelog</a></h4>
<h4><a href="http://tomcat.apache.org/migration.html">Migration Guide</a></h4>
<h4><a href="http://tomcat.apache.org/security.html">Security Notices</a></h4>
</div>
</div>
<div id="low-docs" class="">
<div class="curved container">
<h3>Documentation</h3>
<h4><a href="/docs/">Tomcat 8.5 Documentation</a></h4>
<h4><a href="/docs/config/">Tomcat 8.5 Configuration</a></h4>
<h4><a href="http://wiki.apache.org/tomcat/FrontPage">Tomcat Wiki</a></h4>
<p>Find additional important configuration information in:</p>
<pre>$CATALINA_HOME/RUNNING.txt</pre>
<p>Developers may be interested in:</p>
<ul>
<li><a href="http://tomcat.apache.org/bugreport.html">Tomcat 8.5 Bug Database</a></li>
<li><a href="/docs/api/index.html">Tomcat 8.5 JavaDocs</a></li>
<li><a href="http://svn.apache.org/repos/asf/tomcat/tc8.5.x/">Tomcat 8.5 SVN Repository</a></li>
</ul>
</div>
</div>
<div id="low-help" class="">
<div class="curved container">
<h3>Getting Help</h3>
<h4><a href="http://tomcat.apache.org/faq/">FAQ</a> and <a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></h4>
<p>The following mailing lists are available:</p>
<ul>
<li id="list-announce"><strong><a href="http://tomcat.apache.org/lists.html#tomcat-announce">tomcat-announce</a><br />
Important announcements, releases, security vulnerability notifications. (Low volume).</strong>
</li>
<li><a href="http://tomcat.apache.org/lists.html#tomcat-users">tomcat-users</a><br />
User support and discussion
</li>
<li><a href="http://tomcat.apache.org/lists.html#taglibs-user">taglibs-user</a><br />
User support and discussion for <a href="http://tomcat.apache.org/taglibs/">Apache Taglibs</a>
</li>
<li><a href="http://tomcat.apache.org/lists.html#tomcat-dev">tomcat-dev</a><br />
Development mailing list, including commit messages
</li>
</ul>
</div>
</div>
<br class="separator" />
</div>
<div id="footer" class="curved container">
<div class="col20">
<div class="container">
<h4>Other Downloads</h4>
<ul>
<li><a href="http://tomcat.apache.org/download-connectors.cgi">Tomcat Connectors</a></li>
<li><a href="http://tomcat.apache.org/download-native.cgi">Tomcat Native</a></li>
<li><a href="http://tomcat.apache.org/taglibs/">Taglibs</a></li>
<li><a href="/docs/deployer-howto.html">Deployer</a></li>
</ul>
</div>
</div>
<div class="col20">
<div class="container">
<h4>Other Documentation</h4>
<ul>
<li><a href="http://tomcat.apache.org/connectors-doc/">Tomcat Connectors</a></li>
<li><a href="http://tomcat.apache.org/connectors-doc/">mod_jk Documentation</a></li>
<li><a href="http://tomcat.apache.org/native-doc/">Tomcat Native</a></li>
<li><a href="/docs/deployer-howto.html">Deployer</a></li>
</ul>
</div>
</div>
<div class="col20">
<div class="container">
<h4>Get Involved</h4>
<ul>
<li><a href="http://tomcat.apache.org/getinvolved.html">Overview</a></li>
<li><a href="http://tomcat.apache.org/svn.html">SVN Repositories</a></li>
<li><a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></li>
<li><a href="http://wiki.apache.org/tomcat/FrontPage">Wiki</a></li>
</ul>
</div>
</div>
<div class="col20">
<div class="container">
<h4>Miscellaneous</h4>
<ul>
<li><a href="http://tomcat.apache.org/contact.html">Contact</a></li>
<li><a href="http://tomcat.apache.org/legal.html">Legal</a></li>
<li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
<li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
</ul>
</div>
</div>
<div class="col20">
<div class="container">
<h4>Apache Software Foundation</h4>
<ul>
<li><a href="http://tomcat.apache.org/whoweare.html">Who We Are</a></li>
<li><a href="http://tomcat.apache.org/heritage.html">Heritage</a></li>
<li><a href="http://www.apache.org">Apache Home</a></li>
<li><a href="http://tomcat.apache.org/resources.html">Resources</a></li>
</ul>
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<p class="copyright">Copyright ©1999-2017 Apache Software Foundation. All Rights Reserved</p>
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